September 10th, 2014

Today we did a number of experiments:

• We discovered that the average resting heart rate was 16 beats per minute and that this increases with exercise.
• We experimented to see if there is more Carbon dioxide in exhaled that inhaled air.
• We tested glucose solution with Benedict's Solution and heat an saw that it turned a brick red colour.
• We tested rice and a biscuits with iodine, they turned a black colour indicating the presence of starch. 

HW: Do the questions at the end of the chapter on Digestion (Book pages 36-37)